(;GM[1]FF[4]SZ[19]
GN[Black kills]
PC[https://senseis.xmp.net/?GokyoShumyoSection2Problem54/Solution]AP[GoWiki:2009]
DT[2023-01-11]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection2Problem54/Solution

Black kills]
PL[B]

AB[gb][gc][bd][fd][hd][be][de][fe][cf][ef][bg][cg]
AW[bc][ec][fc][cd][dd][ed][ce][bf]
LB[cc:a]

;B[bb]C[B1]MN[1]
;W[ad]C[W2]MN[2]
;B[af]C[B3]MN[3]
;W[cb]C[W4]MN[4]
;B[ab]C[B5]MN[5]
;W[ac]C[W6]MN[6]
;B[da]C[B7]MN[7]

;LB[cc:a]
)
